feat(bot): add session novelty and similar energy autoplay reason tags

[LucasSantana-Dev]

Summary

• New session novelty reason tag: candidates whose artist hasn't appeared in recent session history get +0.15 score boost, promoting genuine discovery
• New similar energy reason tag: candidates with duration within ±30% of the current track get +0.1 boost as a lightweight energy-bucket signal
• Artist diversity constraint (max 2 per artist per replenish batch) confirmed via existing MAX_TRACKS_PER_ARTIST = 2
• 575 bot tests passing (2 new reason tag tests added)

Test plan

• session novelty reason appears for tracks from artists not in recent history
• similar energy reason appears when candidate duration is within ±30% of current track
• fresh artist rotation still fires for artists in recentArtists but not currentArtist
• Max 2 tracks per artist per replenish batch enforced

[vercel]

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Project	Deployment	Actions	Updated (UTC)
lucky	Ready	Preview, Comment	Mar 30, 2026 6:56pm

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 44ff0683-8cb7-4ccf-8857-405b8461da91

📥 Commits

Reviewing files that changed from the base of the PR and between 78bbc54 and 1878e75.

📒 Files selected for processing (2)

• packages/bot/src/utils/music/queueManipulation.spec.ts
• packages/bot/src/utils/music/queueManipulation.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/autoplay-reason-tags

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[sonarqubecloud]

Quality Gate failed

Failed conditions
23.2% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
90.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud